Fire-cracker.



s'rA'rEs PATENT @OFFICE.

' G. HITT, 0F SEATTLE, WASHINGTON.

FIRE-CRACKED.

No ZDrawing.

To all whom it may concern:

Be it known that I, THOMAS G. Him, a? citizen of the United States,residing at Seattle, in the county of King and State of Washington, haveinvented certain new. and useful Improvements in Fire-Crackers, of whichthe followingis a specificatlOIl. I This invention relates tofire-crackers.

Heretofore, the powder used in fire-crackers has usually potassium mixedwith various organic substances, but such compounds using chlorate as abase, are dangerous in mixing, danerous from percussion, dangerous inhandling, and liable to spontaneous combustion in storage. Therefore,the object of this invention is to produce a fire-cracker that shall beentirely safe under the conditions above stated, and yet possess equal'or greater detonating power.

To this end, my invention consists in the construction and combinationof parts forming a fire-cracker hereinafter more fully described, andparticularly stated in the claims. The construction of this fire-crackermay be in any usual form, though I prefer that described in myapplication filed August 2, 1917, Serial No. 184151.

To make-the powder, I take of the following ingredients, firstpulverized: Perchlorate of potassium 16 parts Aluminium--- 14 Sulfur 5andmix them thoroughly. Then secure in Specification of Letters Patent.

Application filed August 27, 1917. Serial No. 188,862.

been made of chlorate of Patented Jan. 15, 1918.

the cracker body a charge of this powder proportionate to the loudnessof detonation deslred. If the charge be as large as that of otherpowders commonly used, this cracker will produce a very much louderdetonation than others, and, when fired in the dark it will give abroader and more brilliant flare.

Perchlorate of potassium combined with the ingredients stated, or theirequivalents, in about the proportions described, has never, to myknowledge, been exploded in mixing or by percussion, or by spontaneouscombustion, yet, with all these advantages for safety, there is nomaterial difl'erence in the cost of manufacture.

I claim: 1. A fire-cracker body and fuse in combination with a charge ofpowder comprising powdered perchlorate of potassium, aluminum and sulfurcombined in about the proportions stated.

2. In a fire-cracker, a charge of powder composed of potassiumperchlorate and the equivalent of aluminum and sulfur combined in aboutthe proportion stated.

In testimony whereof I aflix my signature in presence of two witnesses.

THOMAS e. mrr.

Witnesses:

H. H. A. HAsrmes, ZELMA Tmmzrson.

